The video captures a marine mammal, likely a seal or sea lion, swimming gracefully in an outdoor enclosure under bright sunlight. The water, clear but with a strong green hue, vividly reflects the sunlight, creating shimmering patterns on the surface and the visible bottom. At the beginning (0:00-0:02), the dark grey or brown mammal is seen gliding just beneath the water's surface, its sleek body reflecting the sunlight as it moves. The camera follows its movement. Around 0:02-0:03, the creature briefly surfaces, its head and part of its back becoming visible before it dips back down. Its motion creates gentle ripples across the water. From 0:03 to 0:06, the mammal swims closer to the edge of the pool. Reflections of people, seemingly spectators leaning over to observe, become more apparent on the water's surface. The enclosure features concrete edges, and metal railings are visible in the background, along with distant buildings, indicating an aquarium, zoo, or similar facility. The bright sunlight suggests a clear, sunny day. No discernible text is visible within the video frames. The setting is in Kiel, Germany.